VR is much more demanding than regular on screen rendering, since Enscape has to do most of the computations twice, once for each eye. Also perceived stuttering is much higher when inside a HMD, than when looking at a screen. In VR you usually want to have 60-90FPS, on screen for a use case like Enscape usually 25-30fps is sufficient.
So what you are saying is a 1080 Ti is not good enough? If that is the case then I am happy with that answer. Just thought since I can run other VR programs/ games perfectly, with obviously more intense graphics than Enscape medium settings. So this just might have to do with how Enscape is programmed? Nothing wrong with that, I ask that since I have worked with Unreal Engine also, and there was always a number of ways to improve performance for VR which made huge differences while keeping mostly the same quality.
I do clean up the scene in Sketchup first, and then render Enscape as a stand alone exe, to try and get things to run as smooth as possible. I also do know that VR ideally needs 90FPS, and when it does not get that it skips down to 45FPS (at least that was the case with Vive, not sure if this is still the case) which would explain lag in VR easily since there is no gradual decrease in frames that you might not notice.
Anyway, if the 1080 Ti is simply not good enough for this, then I consider my question answered. This might even mean a 2080 might not be good enough either, simply a case of a technological boundary we face today? Or are there any other reason why a 1080 Ti (simply asking about 1080 since it's what I have) can not keep up with Enscape on High or Ultra?
What do you guys, the Enscape team, use for VR? And on what settings do you use it?
Thank you for taking the time to respond I appreciate it!